Little Reuben Wilson lost the treasured comforter while shopping with his granddad in their home town of East Kilbride.
His family were beside themselves given Reuben relies on the blanket – called Baba – for sensory comfort.
Mum-of-three Louise and husband Scott have to sneak in when Reuben is sleeping in order to wash and dry Baba before their boy wakes up.
Desperate to track the lost blanket down, Louise, 31, posted a plea on Facebook and was amazed when it was shared 5,000 times.
It worked and Reuben was reunited with Baba the next day.
Louise said: “For all the negativity we hear about social media, it’s wonderful to know there is still a huge amount of humanity behind it.”